How to close port 445 in Win11

　How to close port 445 in Win11? Port No. 445 is a TCP port, a shared folder and printer port, which provides file or printer sharing services within the LAN. Recently, some Win11 users want to close port 445, so how should they do it? Many friends don’t know how to operate in detail. The editor below has compiled the detailed operations for closing port 445 in Win11. If you are interested, follow the editor to read below!

Detailed operation of closing port 445 in Win11

1. First, press the Win S key combination, or click the search icon on the bottom taskbar to open the Windows search window and enter at the top Windows Firewall, and then click on the best matching Windows Defender Firewall Control Panel given by the system;

2. In the Windows Defender Firewall window, in the left sidebar, click Advanced Settings;

　3. Windows Defender Firewall with Advanced Security, left sidebar, click Inbound Rules;

　4. Far right , click New Rule under Operation Inbound Rules;

5. In the New Inbound Rule Wizard, click Port (a rule that controls TCP or UDP port connections), and then click Next One page;

6. Select a specific local port, enter 135,137,138,139,445, separated by commas. Note that the commas here are English commas, and then click Next Page;

7. Click Block Connection, and then click Next Page;

8. All are checked by default, and then click Next page;

9. The name can be set at will, for example: close 135, 137, 138, 139, 445 ports, click Finish;

Note: You can add some descriptions here, Equivalent to remarks

　10. Double-click to close ports 135,137,138,139,445 to view the port settings;

　11. Close ports 135,137,138,139,445 Properties, click Block Connection at the bottom;

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